Remove all the ephemeral apps code.

chrome/browser/extensions/api/storage/managed_value_store_cache.cc

Index: chrome/browser/extensions/api/storage/managed_value_store_cache.cc
diff --git a/chrome/browser/extensions/api/storage/managed_value_store_cache.cc b/chrome/browser/extensions/api/storage/managed_value_store_cache.cc
index b6b1272b8805405d8b30d76fe9a359b8fc3cbfdf..551795855c848aea0ade4cdf875158f6df333781 100644
--- a/chrome/browser/extensions/api/storage/managed_value_store_cache.cc
+++ b/chrome/browser/extensions/api/storage/managed_value_store_cache.cc
@@ -75,7 +75,6 @@ class ManagedValueStoreCache::ExtensionTracker
   void OnExtensionWillBeInstalled(content::BrowserContext* browser_context,
                                   const Extension* extension,
                                   bool is_update,
-                                  bool from_ephemeral,
                                   const std::string& old_name) override;
   void OnExtensionUninstalled(content::BrowserContext* browser_context,
                               const Extension* extension,
@@ -122,7 +121,6 @@ void ManagedValueStoreCache::ExtensionTracker::OnExtensionWillBeInstalled(
     content::BrowserContext* browser_context,
     const Extension* extension,
     bool is_update,
-    bool from_ephemeral,
     const std::string& old_name) {
   // Some extensions are installed on the first run before the ExtensionSystem
   // becomes ready. Wait until all of them are ready before registering the